Michelin 21134 Pilot Sport AS 4 275/45R21 110V All-Season Ultra High Performance Tire

The Michelin Pilot Sport AS 4 in 275/45R21 is an all-season ultra high performance passenger car tire engineered to deliver exceptional grip and confidence across a wide range of driving conditions — from summer heat to light winter weather. Built on Michelin's proven performance platform, this tire combines year-round capability with the dynamic handling characteristics expected from a high-performance fitment.

Key Features:

• Dynamic Response Technology distributes forces and temperatures evenly across the tread for extended wear life
• Asymmetric tread pattern places more rubber on the outer shoulder for exceptional lateral grip during cornering
• Full-depth interlocking sipes create biting edges throughout the life of the tire, improving wet and light-snow traction
• Helio Plus Technology uses an advanced rubber compound that maintains grip even in near-freezing conditions
• Tread groove biting edges grip loose snow to help control acceleration and braking in winter conditions
• 275/45R21 size with a 110 load index and V speed rating
• Overall diameter: 30.8 in
• All-Season rated for year-round use

The Pilot Sport AS 4 is designed for drivers who demand true ultra high performance handling without sacrificing all-season versatility. A Standard Manufacturer's Limited Warranty is included. Note: ZP (Zero Pressure) run-flat technology is available on select sizes — please confirm availability for the 275/45R21 fitment at time of purchase.